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Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions:

1. A Python developer is testing truth values of different data types using the bool() function. The expression bool([0]) is evaluated in the script. What result should be expected when this expression is printed?

A) Error
B) None
C) True
D) False

2. A script defines a variable x = None and checks its truth value using a conditional statement. The developer wants to understand how Python evaluates None in Boolean contexts. What will bool(x) return?

A) Error
B) None
C) True
D) False

3. A script attempts to divide two numbers using / and //. The values are 7 and 2. The developer wants to understand the difference between true division and floor division. What are the results respectively?

A) 3 and 4
B) 4 and 3
C) 3.5 and 3
D) 3 and 3.5

4. You are writing a function named process_data()to read and process numerical input from a file. The function must:
- read the file data.txt,
- attempt to convert the first line into an integer,
- handle file, conversion, or index-related exceptions,
- print the value only if no error occurs,
- and always print a final message after execution.
Which implementation correctly and robustly meets all these conditions? Select the best answer.

A)

B)

C)

5. Which of the following statements about Python functions are correct? (Choose two.)

A) If a function does not contain a returnstatement, it returns Noneby default.
B) passexecutes the function body and returns its result.
C) Positional arguments must be passed in the order defined, while keyword arguments can be passed in any order using their parameter names.
D) Functions can only return numeric values or strings.
E) A function cannot call itself or be passed as an argument to itself.
F) Default parameters must always come before required ones in the parameter list.

Solutions: